Risolvi le seguenti equazioni tenendo presente che:
SEMPLICE MEDIO DIFFICILE
- $$3(x+3)=12$$
- $$4(x-1)=5(2x-1)$$
- $$-5(x-2)=-3(-2+3x)$$
- $$3x+3\left( 2x-3\right) +6=-7\left( x-1\right) -4x$$
- $$-3\left( -x+3\right)+2\left( -2x-4\right) +2=5x-3\left( 2-x\right)$$
- $$-3+4(x+1)+2(x-3)=2(3x-4)-5(x-1)+x$$
- $$-8\left( x-1\right) -2\left( x-8\right) =2x-3\left( x-6\right) -3$$